1-PENTEN-3-OL
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
An unsaturated aliphatic alcohol used as a fragrance ingredient, contributing green, herbal, and earthy notes to cosmetic formulations. Like many unsaturated alcohols, it may present some sensitization concerns.
1-Penten-3-ol is an unsaturated aliphatic alcohol (pent-1-en-3-ol) with a characteristic green, herbaceous odor profile. It is not listed in EU Annex II (banned substances) or Annex III (restricted substances) of the Cosmetics Regulation, suggesting permitted cosmetic use. The allylic alcohol structure is relatively reactive, which may contribute to its characteristic odor but also raises theoretical concerns for skin interaction. No significant hazard statements are associated with this material in the available data.
Skin benefits
- Provides green, herbal fragrance notes
- Contributes to complex fragrance compositions
Known concerns
- Theoretical skin sensitization concern from allylic alcohol structure
- Limited comprehensive toxicological data
- May contribute to overall fragrance allergen load
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Check your shelf
Find 1-PENTEN-3-OL in your products.
Scan any cosmetic product with LuxSense to see if it contains 1-PENTEN-3-OL and get a full ingredient breakdown with safety scores.
This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.